318 idles fine at 750 RPMs but when it goes into drive..... pfft.....

[bschubarg]

318 standard bore.... custom roller cam, new timing chain etc....
MSD Digital 6
Firing order has been confirmed.....

When ever I put it into reverse or drive, idle drops considerably and stalls.... WTF?

 

[CCHHAARRGGER!]

without knowing everything you got, sounds like either your timing is off, not enough, or your carb is causing you the problem. I has this happen to me on a 383 years ago, drove me nuts. The solution was to bring the timing up. I now use the timing plates from FBO to take the guess wok out. You want as much initial advance (idle ) as possible before the starter wants to crank backwards. Usually around 20 degrees or so , depending on the cam. But you need to limit your mechanical advance not to go any further than 34-35 degrees. Check the FBO website . But the first thing I would do is unplug the vacuum advance and bring your timing up to the point where the car no longer increases rpm when you are increasing the timing.

 

[bschubarg]

without knowing everything you got, sounds like either your timing is off, not enough, or your carb is causing you the problem. I has this happen to me on a 383 years ago, drove me nuts. The solution was to bring the timing up. I now use the timing plates from FBO to take the guess wok out. You want as much initial advance (idle ) as possible before the starter wants to crank backwards. Usually around 20 degrees or so , depending on the cam. But you need to limit your mechanical advance not to go any further than 34-35 degrees. Check the FBO website . But the first thing I would do is unplug the vacuum advance and bring your timing up to the point where the car no longer increases rpm when you are increasing the timing.

Great advice.... I will start there.... Thanks....

 

[bschubarg]

After reading your advice I realized I set the initial timing with the vacuum advance connected..... duh….

 

[bschubarg]

Fixed the issue... timed the car with vacuum advance removed..... Rookie mistake. probably should not be drinking JD while tuning......Cheers......